Tests for VMArray supporting new multi-dim ops.
Tests for VMArray supporting new multi-dim ops.

Only run on MoarVM for now. This checks that existing dynamic arrays
will play nice with the new multi-dim access APIs, which may ease
some code-gen (but mostly checks the ops are basically functional).

cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp